Territory



(No Mdel.)

J. C. TAPBEINER.

Assn FURNAGE.

I Fig. Z.

Patented Feb. 20, 1883.

PATENT rtree.

JOHN O.TAPPEINER, OF BISBEE, ARIZONA TERRITORY.

ASSAY- FURNACE.

SPECIFICATION forming part of Letters Patent No. 272,599, dated February20, 1883. Application led September 12, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN O. TAPPEINER, of Bisbee, county of Cochise,Territory of Arizona, have invented an Improved Portable Assay-Furnace;and I do hereby declare the following to be a full, clear, and exactdescription thereof.

My invention relates to an assay-furnace which is' intended for the useot' miners and prospectors, and to be easily packed up and carried fromplace to place, as needed; and it consists in the combination of deviceshereinafter explained and claimed. At the top it is decreased in size,and has a collar, upon which the lower section of the pipe is made tofit. The pipe is made tapering, decreasing in size toward the top, andin sections which may be telescoped together, so that the whole can bereversed and placed in the furnace above the grate. A cap then closesthe whole and is retained in place by a hinge-clamp and lock, which alsoserve to retain the pipe in place when in use.

Referring to the accompanying drawings for a more complete explanationof myinvention, Figure 1 is a view of my furnace set up ready7 for work.Fig. 2is a section showingit packed. Fig. 3 is a detail. Fig. 4 is aplan of cover.

A is the body of my furnace, the exterior casing of which is made ofmetal or suitable material and the interior lined with tire-brick, clay,or any non-conducting heat-resisting material. The body is madetapering, from four to ten inches in diameter, and about three times ashigh, increasing in size from the bottorn to the shoulders at the top,so that it has the greatest diameter where the greatest amount of roomis required. rI`his also gives a better draft. The shoulders B of thecover are curved inward from the point ot' greatest diameter, and acollar, C, is formed at the top to receive the pipe. Within the furnaceand around the upper edge is an iron ring,D, about oneinch wide andone-fourth of an inch thick. This ring resists external pressure andprevents the furnace being` crushed when it is packed upon an animal fortransportation.

E is the fire-grate, which is preferably made of sheet-iron, coated alsowith tire-clay, and with round holes punched init. The burrs formed bypunching the holes are turned up,

clay also.

and they assist in holding the coating of tireclay in place, the holespassing through the Below the grate is a draft regulating door, F, and Gis adoor about thi ee-fourths ot' an inch above the grate, for theintroduction of picks, drills', &c., to heat them for tempering whendesired. Above lthis in another door, H, ofthe proper shape to receive amufe, which lits it, and may be introduced when` ever needed.

I I are sections of pipe made tapering so that the lower end ot' thelower section will lit over the collar O at the top of the furnace, andthe lower end of each succeeding joint or section tits tightly into thetop of the next lower one, as shown, when they are all drawn out, thusmaking a pipe of any desired height.

J is a door made in the side ot' the lowest section, through which fuelis'supplied to the furnace from time to time, as needed, and throughwhich the crucibles may be introduced.

In order to hold the cover B in place and steady it and the pipe, Iemploy a clamp, K, which surrounds the collar. One end extends down uponthe side of the furnace and has a hinge-joint at L, and the other endextends down upon the opposite side of the furnace, and has a lockot'auy suitable description at M.

When the furnace is to be transported or is not in use the pipe is takenotl", and by reversing it and pressing its small end upon the ground thejoints will be loosened where the.

end of one section binds within the next, and the sections may all betelescoped one within the other. The top of the upper section is flangedor beaded, so as to prevent its being bent or broken when it is pressedupon the ground. lhen the pipes have been telescopcd they are placed inthe furnace small end down, and occupy the space" between the grate andthe top.

Three pairs of assay-tongs will fit between the pipe and the inside ofthe furnace.

The flux-boxes are made round, about two inches high, with centralpartitions and hinges, so that each will form two boxes, and they will tloosely inside the pipe. The iron mufde will also tit inside the pipe,and will be in no no danger of breakage during transportation. Then thewhole is in place the cover is shut IOO down upon the top and is securedby the clamp, the whole beingthen ready for transportation.

This apparatus is designed for the use 0f ussnyers, miners, orprospectors, and is compact and portable. It can be packed upon ananimal over any trail, and into districts where it can be made availablein determining the value ofthe ores upon the spot. It is also useful forsharpening and tempering picks, drills, and other tools.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A portable furnace consisting ofthe upright body A, with its doors F,Gr, and H,

grate E, and cover B, with collar, as shown, in

combination with the pipe made in tapering sections I, so es to heextended or closed tel eseopically or reversed into the furnace, andhaving the charging-door J in the lower seetion, substantially as hereindescribed.

2. The upright body A, with its cover B and sectional telescopic pipeIl, constructed as described, whereby it may be packed in the main bodyA, as shown, in combinfition with the z5 clamp K, hinged to the body ot'the furnace,

vand locking devices, as described.

JOHN G. TAPPEINER.

Witnesses LEWIS WILLIAMS, W. W. FENNER.

